English to Japanese Tech/Engineering Computers: Systems, Networks

英語に関する質問で申し訳ないです。

1) consolidate の後の、their IT の意味がわかりません。their IT with なら意味が通ると思うのですが。

By giving enterprises the platform they need to understand, optimize and consolidate their IT, Riverbed helps enterprises to build a fast, fluid and dynamic IT architecture that aligns with the business needs of the organization.

2) creating 以降から急に読めなくなるのですが、主語は何になりますか？
"As this shift to hybrid networks occurs, ensuring application performance and end-user productivity is critical, creating a need to integrate access to corporate applications, as well as SaaS, in a single pervasive framework."

すみません。返信いただければ助かります。